Tread-power.



No. 877,388. PATENTED JAN. 21, 1908.

' 0. P. WELDING.

TREAD POWER.

APPLICATION FILED AUG. 11 1906.

2 SHEETS-SHEET 1.

anmllli No. 877,388. PATENTED JAN. 21, 1908. I O. P. WELDING- TREADPOWER. APPLICATION FILED AUG.11. 190g.

2 SHEETS-SHEET 2,

Email- Emmi" aaweml cn' OVID P. WELDING, OF SIOUX CITY, IOWA.

TREAD-POWER.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed August 11. 1906. Serial No. 330.156..

To all whom it may concern:

Be it known that I, OVID P.VVELDING, a citizen of the United States,residing at Sioux City, in the county of Woodbury and State of Iowa,have invented a new and useful Improvement in a Tread-Power, of whichthe following is a specification.

This invention relates to certain new and useful improvements in treadpowers, the object being to provide a tread power so constructed thatthe frame carrying the endless belt can be adjusted to any incline desired.

lVith this and various other objects in view, the invention consists inthe novel features of construction, combination and arrangement ofparts, hereinafter fully described and pointed out in the claims.

In the drawings forming a part of this specification :Figure 1 is aperspective View of the tread power showing the frame carrying theendless platform in a horizontal position. Fig. 2 is a longitudinalsectional view of the tread power. Fig. 3 is a top plan view of thetread power partly broken away. Fig. 4 is a vertical sectional view ofthe tread power. I

Referring to the drawings A indicates a main frame mounted on legs A,having standards B secured on the upper edge of its sides adjacent oneend, by braces B, connected together by a cross-bar B Mounted in thesides of the frame midway of their length is a shaft O having agear-wheel C mounted thereon adjacent one end. Sleeves D provided witharms D, are looselymounted on the shaft adjacent each side piece,provided with enlarged apertured ends D to which the sides of thesupplementary frame E are secured by bolts E. Segmental gears F aresecured to the under side of the side pieces of the frame E, adjacentone end adapted to mesh with gear-wheels G mounted on the shaft 11,which is mounted in the sides of the frame A, adjacent one end. Acrank-wheel H is mounted on one end of the shaft H provided with ahandle H so that the end of the frame can be raised and lowered asdesired and the other end is adapted to rest on the bar B when in ahorizontal position. Shafts I, J and K are mounted in journal-beams I,J, and K secured to the upper end of the sides of the frame E, theshafts I and K being provided with wheels I K adjacent each end on whichis mounted an endless platform L,

having a sprocket chain M secured to its under side adjacent each edge,adapted to work over sprocket-wheels N mounted on the shaft J, which .isalso provided with a gear-wheel Q meshing with the gear-wheel O, of theshaft C, from which the power is adapted to be transmitted.

From the foregoing description it will be readily seen that I haveprovided a very novel means for adjusting the incline of the platform soas the space can be increased or decreased as desired.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is r 1. In a device of the kind described,the combination with a main frame provided with pivoted arms, of asupplementary frame secured between said arms provided with an endlessplatform and means for raising and lowering one end of said framecarrying the platform, for the purpose described.

2. In a device of the kind described, the combination with a main frame,of arms mounted on 'said frame a supplementary frame provided with anendless platform carried by said arms and adjusting means connected toone end of said frame, for the purpose described.

3. In a device of the kind. described, the

combination with a main frame provided with standards connected bycross-bars, of arms pivoted to said frame, a supplementary frameprovided with an endless platform carried by said arms, segmental gearssecured to one end of said frame and a shaft provided with gear-wheelsadapted to mesh with said segmental gears, for the purpose described. 1

4. Ina device of the kind described, the combination with a main frameprovided with a shaft, of arms loosely mounted on said shaft, asupplementary frame secured to said arms, shafts mounted on thesupplementary frame provided with wheels, an endless platform mounted onsaid wheels and means for tilting said supplementary frame, for thepurpose described.

5. The combination with a main frame provided with a shaft carrying agear wheel, of arms loosely mounted on said shaft, a supplementary framesecured on said arms provided with a shaft carrying a gear wheel meshingwith the gear on the shaft on the main frame, an endless platformmounted on the supplementary frame carrying sprocketchains, andsprocket-wheels fixed to the shaft carried by the supplementary framemeshing with said chains and means for tilting the su plementary frame,for the purpose described.

6. The combination with a main frame provided with a drive shaft of armsloosely mounted on said shaft a supplementary frame secured between saidarms, shafts provided with wheels mounted on the supplementary frame,adjacent each end, an endless platform mounted on said wheels, segmentalgears secured to one end of said supplementary frame, a shaft mounted onone end of the main frame provided with gear wheels meshing with saidsegmental gears, and a fly-wheel secured to said shaft provided with ahandle, for the purpose de-' scribed.

7. The combination with a main frame provided with a shaft carrying agear wheel, of sleeves provided with arms loosely mounted on said shaft,a supplementary frame carried by said arms, an endless platform mountedon the supplementary frame carrying sprocket-chains, a shaft mounted onsaid frame provided with a sprocketwheel meshing with said chains, agear wheel secured on said. shaft meshing with the gear wheel secured onthe shaft of the main frame, and means for adjusting one end of thesudpporting frame, for the purpose describe 8. In a device of-the kinddescribed, the combination with a main frame, of pivoted arms mounted onsaid frame, a frame carried by said arms provided with an endlessplatform, segmental gears carried by one end of said frame, and agear-wheeli carried by the main frame meshing with said segmental gearfor the purpose described:

OVID P. WELDING. Witnesses:

J. F. HoPKINs, JOHN A. OLsoN.

